package com.masou.coupon.utils;

import org.springframework.stereotype.Component;

import java.util.Random;

/**
 * Created by Paul on 2017/3/8.
 */
@Component
public class RandomKeyUtil {

    public String getRandomString(int length) { //length表示生成字符串的长度
        String base = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(base.length());
            sb.append(base.charAt(number));
        }
        return sb.toString();
    }

}
